Glutathione is the “master antioxidant” most important for immune system protection. It can even replenish other antioxidants polluted with free radicals.
... Able to actually replenish other antioxidants as they become polluted with free radicals, it is the most important antioxidant for immune system protection. It’s normally produced in the body from within our liver. But due to our toxic environment, lifestyles, and diets, that production capacity can be overwhelmed as we endure more and more oxidative stress inherent in today’s world, leading to chronic or terminal disease and dementia.